[PATCH v3 1/9] ASoC: dt-bindings: mt2701-afe-pcm: add HDMI audio path clocks

[Daniel Golle]

Document four additional optional clocks feeding the HDMI audio
output path on MT2701: the HADDS2 PLL (root of the HDMI audio
clock tree), the HDMI audio and S/PDIF interface power gates,
and the audio APLL root gate. Older device trees that do not
wire these up remain valid via minItems. MT7622 does not have
HDMI audio hardware, so its compatible is restricted to the
base set of 34 clocks.

Signed-off-by: Daniel Golle <daniel at makrotopia.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski at oss.qualcomm.com>
---
v3: allOf goes before additionalProperties
v2:
 * Restrict the four HDMI clocks to mediatek,mt2701-audio only
   using an allOf/if/then conditional; MT7622 is capped at 34
   clocks (Krzysztof Kozlowski)

 .../bindings/sound/mediatek,mt2701-audio.yaml | 23 +++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/mediatek,mt2701-audio.yaml b/Documentation/devicetree/bindings/sound/mediatek,mt2701-audio.yaml
index 45382c4d86aa..30f331366566 100644
--- a/Documentation/devicetree/bindings/sound/mediatek,mt2701-audio.yaml
+++ b/Documentation/devicetree/bindings/sound/mediatek,mt2701-audio.yaml
@@ -32,6 +32,7 @@ properties:
     maxItems: 1
 
   clocks:
+    minItems: 34
     items:
       - description: audio infra sys clock
       - description: top audio mux 1
@@ -67,8 +68,13 @@ properties:
       - description: top audio a1 sys pd
       - description: top audio a2 sys pd
       - description: audio merge interface pd
+      - description: HADDS2 PLL 294 MHz (HDMI audio path root)
+      - description: HDMI audio interface pd
+      - description: S/PDIF interface pd
+      - description: audio APLL root pd
 
   clock-names:
+    minItems: 34
     items:
       - const: infra_sys_audio_clk
       - const: top_audio_mux1_sel
@@ -104,6 +110,10 @@ properties:
       - const: audio_a1sys_pd
       - const: audio_a2sys_pd
       - const: audio_mrgif_pd
+      - const: hadds2pll_294m
+      - const: audio_hdmi_pd
+      - const: audio_spdf_pd
+      - const: audio_apll_pd
 
 required:
   - compatible
@@ -113,4 +123,17 @@ required:
   - clocks
   - clock-names
 
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: mediatek,mt7622-audio
+    then:
+      properties:
+        clocks:
+          maxItems: 34
+        clock-names:
+          maxItems: 34
+
 additionalProperties: false
-- 
2.54.0